Design and operating targets for nonideal multicomponent batch distillation

Journal Article · Mon Feb 01 00:00:00 EST 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00014a008· OSTI ID:6475409

Bernot, C; Doherty, M F; Malone, M F ^[1]

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1. Univ. of Massachusetts, Amherst (United States)

A method is reported to estimate the batch sizes, operating times, equipment sizes, utility loads, and costs for the batch distillation of nonideal multicomponent mixtures. The method provides an estimate for both the design and the operating policy for the reflux or reboil ratio without the need to integrate the full column model numerically. This operating policy approximates the constant product composition policy for high purities and high fractional recoveries and shows a substantial cost savings over the constant reflux or reboil policies, primarily on account of a substantial reduction in the vapor rate. The approach provides a good approximation to the results of a detailed optimization in an example for a binary mixture. A more interesting application is illustrated for the separation of a quaternary azeotropic mixture arising from the transesterification of ethyl acetate with methanol to produce ethanol and methyl acetate.

• OSTI ID: 6475409
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 32:2; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DISTILLATION EQUIPMENT
MATHEMATICAL MODELS
COST
DESIGN
ETHANOL
FORECASTING
METHYL ACETATE
MIXTURES
OPERATION
OPTIMIZATION
SEPARATION PROCESSES
ACETIC ACID ESTERS
ALCOHOLS
CARBOXYLIC ACID ESTERS
DISPERSIONS
EQUIPMENT
ESTERS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes